An engineer at Bloom Energy downloaded the service handbook and taught himself methods to dismantle and rebuild them in a day, the Los Angeles Times reported.

They had been in storage because the H5N1 fowl flu outbreak of the mid-2000s.

Bloom says it’s now working to search out different stockpiles of disused machines.

On Saturday, as California Governor Gavin Newsom visited the manufacturing plant, he stated: “We obtained a automotive and a truck and had [them] introduced right here to this facility at 08:00 this morning.

“And Monday, they’ll have these ventilators again into Los Angeles all mounted. That’s the spirit of California.”

Mr Newsom stated the corporate had initially advised him it might take a month to repair 200 ventilators, which assist sufferers breathe if they’re having difficulties attributable to Covid-19 or different illnesses.

But he had replied: “We problem you to do extra and do higher.”

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And on 22 March, the corporate’s chief government, KR Sridhar, despatched the governor a photograph of 24 completed ventilators able to be licensed to be used.